Philips 32HFL5662L/F7 Service Manual page 24

EN 24 7. TPB1.1HU LA
7.1.2 TPB1.1HU back-end board architecture overview
For details about the chassis block diagrams refer to
Block Diagrams. An overview of the TPB1.1HU LA
architecture can be found in
HDMI
FX18
IBC(RS232)
Control signal
Flash
EEPROM
7.1.3 TPB1.1HU smart link board architecture overview
For details about the chassis block diagrams refer to
chapter 9. Block Diagrams. An overview of the TPB1.1HU LA
architecture can be found in
Troubleshooting
The following tests could help to analyze the failures:
1. RSSI (Received Signal Strength Indication) Test Fails:
Check both high TX and low TX oscillators, 7T94, 7T95
and surrounding components, switch IC 7T92 and TX amp
7T97 and surrounding components.
2010-Nov-05
Circuit Descriptions
Figure 7-4 I2C Architecture of smart module board
chapter 9.
Figure 7-5 .
Scaler
RTD2472FD-GR
RTD2482FD-GR
Key Voltage to ADC
Figure 7-5 Back-end board architecture of TPB1.1HU LA
Figure 7-6.
Audio Amp
Audio R/L
BD5444EFV
LVDS
Panel
Connector-40 pin
RS232
Zigbee Module
Connector-5 pin
I2C Clock Module
Connector-6 pin
IR /Key Board
Connector-9 pin
2. High and/or Low Test Fails: Check RF path, 1T43, 1T44,
5TB3 and surrounding components.
3. Game/Data Test Fails: Check MCU 7T71, level shifter
7T01 and 7T02.
4. TV Interface Test Fails: Check MCU 7T71.
5. TV Test Fails: Check RF path, 1T43, 1T44, 5TB3 and
surrounding components.
6. Code Version and Address Test Fails: It means the RF
communication loop does not work properly. Check 7T91,
its oscillator(s)1T41, 1T47 and filter 1T42. Check MCU
7T71.
18890_218_101020.eps
101020
Speaker
Connector-4 pin
18890_211_100927.eps
101018